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Regulation Of Subcellular Localisation Of Respiratory Syncytial Virus M Protein: Implications For Pathology
Funder
National Health and Medical Research Council
Funding Amount
$580,195.00
Summary
Respiratory syncytial virus (RSV) is the major cause of viral pneumonia in infants and the elderly, causing more deaths in winter than influenza. We have observed RSV M protein in the nucleus of infected host cells where it inhibits host cell transcription. We propose to investigate the regulation of nuclear localisation of M by phosphorylation and binding to cellular factors and its importance to RSV pathogenesis. The results will relate strongly to future drug and vaccine development.
Pneumovirus Infection In Infancy Affects The Development Of Life-long Adaptive Immunity.
Funder
National Health and Medical Research Council
Funding Amount
$408,469.00
Summary
Respiratory syncytial virus is the most important cause of acute lower respiratory tract infection (RTI) in young children worldwide. Hospital admission rates in Western societies for RTIs are around 3% for children younger than 1 year. A vaccine to RSV is not yet available and repeat infections occur thoughout life, suggesting that the immune response does not develop correctly. In this project we are exploring the mechanisms that underpin disease development and promote incomplete immunity.
Evolution Of Airway Function And Inflammation In Early Cystic Fibrosis Lung Disease
Funder
National Health and Medical Research Council
Funding Amount
$494,447.00
Summary
Our goal is to evaluate if lung function can identify the onset of early lung disease in infants with cystic fibrosis (CF). We aim to evaluate: - Changes in lung function in infants with CF. - Associations between lung function and lung inflammation and infection. - Links between infant lung function and disease severity at 2 years of age. The long term aims are to determine how useful lung function will be in trials of novel treatments for the early treatment of CF.
Correction And Measurement Of The Basic Defects In Cystic Fibrosis
Funder
National Health and Medical Research Council
Funding Amount
$929,335.00
Summary
Airway disease caused by the genetic disease cystic fibrosis (CF) cannot currently be prevented or cured. Current treatments (other than lung transplant) can only slow the inevitable decline in lung health. Early death from lung failure occurs for many with CF. We have developed a gene transfer technique to introduce the corrective gene (CFTR) into CF-diseased airway cells. We have used airways in mice to test and develop this method, to determine if long-lasting genetic correction of the airway ....Airway disease caused by the genetic disease cystic fibrosis (CF) cannot currently be prevented or cured. Current treatments (other than lung transplant) can only slow the inevitable decline in lung health. Early death from lung failure occurs for many with CF. We have developed a gene transfer technique to introduce the corrective gene (CFTR) into CF-diseased airway cells. We have used airways in mice to test and develop this method, to determine if long-lasting genetic correction of the airway cells can be achieved. The gene is introduced into the airway as a single small dose of special delivery-particles (vector) that have been built using highly-modified components of the HIV-1 virus. If ultimately successful in humans with CF, the disease should be halted, or even cured. Our recent work indicates that we have been able to insert the gene into airway progenitor cells, confirming our hypothesis that long-lasting gene expression can be achieved this way. To know if the method would be safe and effective in humans, we must now test the technique in sheep (as a human-size lung) and in marmosets (as a human-like lung) before clinical trials could be considered. We will monitor animals for up to 3 years to be sure the effect of the gene is truly long-lasting, and we will document how the gene-transfer vector disappears from the body. We have also discovered a new way to examine the detail of the very thin fluid layer on the airway surface. This fluid is too shallow in CF airway (allowing bacteria to stick and start disease) and so a successful gene therapy should return the fluid to it's proper depth. This method uses X-ray light from a synchrotron, and we expect it will work without the need to sacrifice animals to measure the airway surface. If successful it also has potential to be used much like a normal X-ray in humans with CF, to test if a gene therapy has worked.Read moreRead less
Asbestos And Related Diseases In Western Australia
Funder
National Health and Medical Research Council
Funding Amount
$404,727.00
Summary
This project will extend the follow-up of large, well established groups of people who have experienced significant exposure to blue asbestos, either through their jobs or environmentally. Mesothelioma, lung cancer and asbestosis are common among these groups. This study will provide information on the effects of different levels of exposure to blue asbestos. Ways in which these diseases may be prevented through the diet and other lifestyle habits will be closely examined. This project provides ....This project will extend the follow-up of large, well established groups of people who have experienced significant exposure to blue asbestos, either through their jobs or environmentally. Mesothelioma, lung cancer and asbestosis are common among these groups. This study will provide information on the effects of different levels of exposure to blue asbestos. Ways in which these diseases may be prevented through the diet and other lifestyle habits will be closely examined. This project provides important data on the dose-response effects of a known carcinogen. Due to the integrated nature of our already established follow up systems we are in a unique position worldwide to achieve these aims. The dose response relationships between exposure and disease identified by this study will contribute to occupational health and safety exposure standards and compensation policy in Australia. The information on lifestyle factors is appropriate for use in many different health promotion interventions. Ongoing contact with the cohorts is critical to our involvement in collaborative preventative and biological studies.Read moreRead less
Synchrotron X-ray Assessment Of Airway Surface Physiology For Cystic Fibrosis
Funder
National Health and Medical Research Council
Funding Amount
$778,228.00
Summary
We seek a cure or long-lasting therapy for the fatal airway disease in cystic fibrosis. Disease is caused by a shallow and dehydrated airway surface liquid (ASL), allowing bacteria to infect the lung. We can introduce a corrective gene into mouse airways where it can be effective for over 1 yr, but no fast, accurate and non-invasive measurement exists to test if treatments are successful. We will develop methods using synchrotron light to directly measure ASL depth changes in live mouse airways.
Role Of Amnion Derived Stem Cells In Reducing Lung Fibrosis
Funder
National Health and Medical Research Council
Funding Amount
$349,485.00
Summary
Human amniotic epithelial multipotential cells from the term placenta are being studied in a mouse model of pulmonary fibrosis-emphysema to demonstrate their anti-inflammatory, anti-fibrotic, immune-suppresive and lung repair capability. The availability and numbers of these cells from discarded placentas at birth are unlimited and their potential to repair serious lung disease would have strong clinical interest as a new stem cell therapy.
Role Of Nucleocytoplasmic Trafficking Of Matrix Protein In RSV Infection
Funder
National Health and Medical Research Council
Funding Amount
$495,041.00
Summary
Respiratory syncytial virus (RSV) is the major cause of viral pneumonia in infants and young children throughout the world. By the age of 3, virtually every child has been infected by RSV at least once. RSV is also an important cause of pneumonia in the elderly and is estimated to cause more deaths each winter than influenza. In Australia, an estimated 100,000 infants are infected by RSV every year. In Victoria, RSV is the most common cause of all reported cases of respiratory tract disease, wit ....Respiratory syncytial virus (RSV) is the major cause of viral pneumonia in infants and young children throughout the world. By the age of 3, virtually every child has been infected by RSV at least once. RSV is also an important cause of pneumonia in the elderly and is estimated to cause more deaths each winter than influenza. In Australia, an estimated 100,000 infants are infected by RSV every year. In Victoria, RSV is the most common cause of all reported cases of respiratory tract disease, with an estimated annual cost of $1-4 million. Despite more than 40 years of research there is no vaccine to prevent RSV infection, and the only drug (ribavirin) licenced for treatment of RSV infection is expensive, difficult to administer, toxic, and of doubtful efficacy. We propose to examine one of the RSV proteins, the matrix protein (M). M is very important for virus propagation and is responsible for resultant cell injury. We have observed that M enters the cell nucleus (the location for all cellular DNA and RNA synthesis) where it appears to inhibit host cell RNA synthesis early in infection; later, it exits the nucleus in a step required for virus production in the cytoplasm. The signals that regulate transport of M into and out of the nucleus and the effect on the host cell leading to pathogenesis, are the focus of this proposal. The results of this study will be beneficial in many ways. Most importantly, we will gain knowledge about the processes underlying cell injury caused in RSV disease, which may lead to the identification of novel targets for intervention strategies.Read moreRead less
The Role Of The Hedgehog Signaling Pathway In Asbestos Associated Malignant Mesothelioma
Funder
National Health and Medical Research Council
Funding Amount
$563,554.00
Summary
Mesothelioma is a aggressive asbestos related cancer mainly of the lung with no effective treatment. Evidence is pointing to the reactivation and aberrant expression of developmental signalling pathways such as the hedgehog signalling pathway as critical to the pathogenesis of certain types of cancer. This study will determine if mesothelioma is regulated by signalling through the hedgehog pathway and by blocking this pathway we will attempt to inhibit tumour growth.
Control Of Human Inspiratory Muscles In Health And Disease
Funder
National Health and Medical Research Council
Funding Amount
$396,699.00
Summary
This project will study how human inspiratory muscles that 'pump' air into the lungs and upper airway 'dilator' muscles are controlled in normal healthy subjects and subjects with respiratory disorders such as obstructive sleep apnoea. We will study (i) the output to the inspiratory muscles, (ii) the interation of automatic and voluntary control of breathing, and (iii) reflex connections of human pump and dilator muscles. This work promises new understanding of basic and patho-physiology.